Expander head 8×1=5/16″ standard, ROLOCK

Resilient and durable due to specially hardened segments    Up to 50 % savings in costs for working time, soldering material, solder joints and energy compared to fitting connections     Insertion depth according to DVGW specifications     Forced guidance guarantees perfect centering and uniform capillary gap    Bayonet lock allows quick change of expander head With the ROLOCK expander heads, plumbers in the SHK and refrigeration/air conditioning sector can expand pipes made of copper, stainless steel and aluminum to create a pipe connection without fittings.